3019 44TH ST SE 2018-12-27 - Laserfiche WebLink

.S0 L-1(-1"'` S S6 I0+ L G EO DESIGNz FIELD R • i • 1ofi . ........... . . Everett River Front-Simpson Report: 123 GeoDesign • Polygon-127-01Date: 10/3/2016 Reports with Unresolved Nonconformance Issues: Permit: PW 1505-005 Nick Abdelnour(Polygon) Randy Allen(City of Everett) Weather:Cloudy, 50's Ron Bowen(Polygon) Eddy Stevens(Polygon) Arrival/Departure: 0800/0815 Distribution: Doug Ross(Polygon) Kirk Keck(City of Everett) Paul McKee(City of Everett) Dave Foster(City of Everett) Prepared By: Ben Weinberg, E.I.T. 0 Site Plan(s) m Density Test Summary Signature: -- �✓ Attachments: 0 Installation Records ❑ Other Reviewed By: R,42 PURPOSE of VISIT: GeoDesign representative, Benjamin Weinberg,was on-site part time at the request of John Feltner with Polygon to observe foundation subgrade areas for Lots 162 and 163. In the afternoon, GeoDesign was requested on-site by Doug Ross with Polygon to add an extension to Settlement Marker#8. SUMMARY of OBSERVATIONS: Lot 162: Previously, GeoDesign noted that the east half of Lot 162 had been over-excavated by 2 feet, lined with geotextile fabric, and backfilled with permeable ballast material. GeoDesign also noted that a portion in the northwest corner of the lot had been over-excavated approximately 12 to 18 inches down to a dense brown silty SAND with gravel and backfilled with permeable ballast material. The exposed foundation subgrade on the west half of the lot consisted of a brown to gray silty SAND with gravel that could be probed less than 3 inches using a 1/2 inch diameter soil probe. Relative compaction of the exposed subgrade material on the west half of Lot 162 was tested using Troxler Moisture-Density gauge; in-place density tests indicated that the exposed foundation subgrade material had been compacted to greater than 95%of its maximum dry density as determined by a Modified Proctor analysis. It is the opinion of GeoDesign that the foundation area observed today is currently suitable for support of the intended load. GeoDesign recommends that any surficially loose and saturated material be removed from the base of the foundation area prior to the placement of concrete. 163 Loth: Previously, GeoDesign noted that the east half of Lot 163 had been over-excavated by 2 feet, lined with geotextile fabric, and backfilled with permeable ballast material. GeoDesign also noted that a portion in the southwest corner of the lot had been over-excavated approximately 12 inches down to a dense brown silty SAND with gravel and backfilled with permeable ballast material. The exposed foundation subgrade on the west half of the lot consisted of a brown to gray silty SAND with • gravel that could be probed less than 3 inches using a 1/2 inch diameter soil probe. Relative compaction of the exposed subgrade material on the west half of Lot 163 was tested using Troxler Moisture-Density gauge; in-place density tests indicated that the exposed foundation subgrade material had been compacted to greater than 95%of its maximum dry density as determined by a Modified Proctor analysis. It is the opinion of GeoDesign that the foundation area observed today is currently suitable for support of the intended load. GeoDesign recommends that any surficially loose and saturated material be removed from the base of the foundation area prior to the placement of concrete. A summary of our observations and density tests taken today can be found in the attached Figure 1, Nuclear Density Gauge Data, and Photo Log. The client and contractor were notified of our observations after our departure from the site today. This report presents opinions formed as a result of our observation of activities relating to geotechnical engineering or environmental services.We rely on the contractor to comply with the plans and specifications throughout the duration of the project irrespective of the presence of our representative.Our work does not include supervision or direction of the contractor,the contractor's employees or agents. Our firm is not responsible for site safety.This field report is a DRAFT representation of our field observations,testing,and preliminary recommendations.The report can only be considered final upon review of the GeoDesign project manager,as indicated by initials in the"Reviewed By'section. 10700 Meridian Avenue North,Suite 402 I Seattle,WA 98133 I 206.838.9900 2502 Jefferson Avenue 1 Tacoma,WA 98402 I 253.203.0095